Garmite is a rare cesium lithium magnesium silicate. It was approved as a distinct mineral species in 2017. It was first described from Darai-Pioz glacier, Alai mountain range, Tien Shan, Rashtskiy district, Tajikistan.

Hardness

3.5

Mohs

Luster

Vitreous

Transparency

Transparent

mineralrare

Garmite

Hardness: 3.5
Luster: Vitreous
Transparency: Transparent

No image

Is this garmite?

4-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

1
Test the hardness
Try to scratch garmite with a known reference. Garmite sits at Mohs 3.5, softer than the next harder reference, harder than the previous one.
2
Read the luster
Hold the specimen under a strong light. Luster: vitreous.
3
Match the color range
Compare against the expected color range: white, colorless, gray.
4
Look at form & habit
Crystal system: monoclinic. Typical habit: tabular crystals.

Often found alongside garmite

Minerals reported to co-occur with garmite. Spotting these in float or country rock is a strong cue you are in the right ground.

Quartz
mineral · Mohs 7

All properties

Chemical formula: CsLiMg₂(Si₄O₁₀)F₂
Mohs hardness: 3.5
Colors: White Colorless Gray
Luster: Vitreous
Transparency: Transparent
Crystal system: Monoclinic
Crystal habit: Tabular crystals
Rarity: Rare
Uses: Collector
Host rock: alkaline pegmatites

Where rockhounds find garmite

Classic worldwide localities

Darai-Pioz glacier, Alai mountain range, Tien Shan, Rashtskiy (formerly Garmskiy) district, Tajikistan

Field-hunting tip

Where it forms: alkaline pegmatites. If you start seeing quartz, k-feldspar in float, you are in the right ground. Typical habit: tabular crystals. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify garmite?+

Mohs hardness is 3.5. Luster: vitreous. Common colors include white, colorless, gray.

Where is garmite found?+

Notable localities include Darai-Pioz glacier, Alai mountain range, Tien Shan, Rashtskiy (formerly Garmskiy) district, Tajikistan.

What minerals are found with garmite?+

Garmite commonly co-occurs with Quartz, K-feldspar. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does garmite form in?+

Where it forms: alkaline pegmatites. Working float back to the host body is the standard way to chase a fresh occurrence.

What is garmite used for?+

Garmite is used in collector.

Find garmite on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.